Re: buzzing noise, nvidia sound
I cannot speak for all distributions (and I'm a Linux noob), but for gentoo users:
Thats a feature of that motherboard. I have one too. Its caused by the CPU entering and exiting the halt state, which puts pulses on the power supply being shared by the CPU and sound chip. You are hearing these pluses.
Either run a distrubuted copmuting project like seti@home or add
to your kernel command line in grub.conf,
Both have the same effect, they prevent the CPU entering the halt state by keeping it busy.